Product Description
Refresh cylinder sealing on your 6.7L build with the MAHLE S42140 Standard Piston Ring Set. This OE-quality single-cylinder ring pack is engineered for the 2007.5–2018 Cummins ISB 6.7L. Plasma-moly top ring and OE-style profiles help control blow-by and oil consumption while maintaining factory compression and durability.
Fitment
- 2007.5–2018 Ram 2500 / 3500 / 4500 / 5500 — 6.7L Cummins ISB (24-valve)
Cross-Reference / Related Mahle Items (CPP Diesel only)
- Mahle S42140.020 Piston Ring Set (+0.020): S42140.020
- Mahle S42140.040 Piston Ring Set (+0.040): S42140.040
- Mahle 224-3802 Piston Kit (STD) — pair with S42140 rings: 224-3802
What’s Included
- Complete single-cylinder ring pack: compression, second, and oil-control assembly (order qty 6 for a complete engine)
FAQ
Is this a full engine set?
No—this is a single-cylinder ring set. Order six sets for a full engine.
What’s the standard bore size?
Approx. 4.213" (107.4 mm) for stock 6.7L Cummins ISB.
Do I need to file-fit?
Always measure and set end-gaps per your build and Cummins/Mahle specs.
Will these work with Mahle replacement pistons?
Yes—use S42140 with standard-bore Mahle 6.7L pistons; use S42140.020 or S42140.040 for overbore builds.
Specifications for Mahle S42140
| Attribute | Value |
|---|---|
| Brand | Mahle |
| Part Number | S42140 (Standard) |
| UPC | 027067854667 |
| GTIN | 027067854667 |
| Engine Compatibility | 2007.5–2018 6.7L Cummins ISB (Ram 2500/3500/4500/5500) |
| Bore (Std) | ≈4.213" (107.4 mm) |
| Approx. Ring Axial Heights | 2.87 mm / 2.50 mm / 3.45 mm |
| Package Dimensions | 4.75" × 1.13" × 4.75" |
| Shipping | Calculated at checkout |
| Prop 65 | See www.P65Warnings.ca.gov |
